1155530003 has 8 divisors (see below), whose sum is σ = 1159146768. Its totient is φ = 1151920224.

The previous prime is 1155529997. The next prime is 1155530029. The reversal of 1155530003 is 3000355511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1155530003 - 2⁶ = 1155529939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1155530903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 596825 + ... + 598757.

It is an arithmetic number, because the mean of its divisors is an integer number (144893346).

Almost surely, 2^1155530003 is an apocalyptic number.

1155530003 is a deficient number, since it is larger than the sum of its proper divisors (3616765).

1155530003 is an equidigital number, since it uses as much as digits as its factorization.

1155530003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3493.

The product of its (nonzero) digits is 1125, while the sum is 23.

The square root of 1155530003 is about 33993.0875767412. The cubic root of 1155530003 is about 1049.3662095026.

Adding to 1155530003 its reverse (3000355511), we get a palindrome (4155885514).

The spelling of 1155530003 in words is "one billion, one hundred fifty-five million, five hundred thirty thousand, three".